Thank you very much, Cham! It turns shatters.net forum all this time working on IP address, but I was not aware of I have build Celestia 1.7.0 Qt4, your irregular nebulae models are displayed correctly on it?Also I would like to learn more about your build on MacOS:1. It has an installer?2. It has localize?3. Could you write a list of differences from the last existing version Celestia on MacOS?With your permission, I would like to publish your build on my site that the Russian-speaking users to use it.

I have build Celestia 1.7.0 Qt4, your irregular nebulae models are displayed correctly on it?Also I would like to learn more about your build on MacOS:1. It has an installer?2. It has localize?3. Could you write a list of differences from the last existing version Celestia on MacOS?With your permission, I would like to publish your build on my site that the Russian-speaking users to use it.

I don't know if my models should render correctly on your version, since I can't tell if the nebulae fix was enabled for your built. I suspect it wasn't enabled.If it's an OS X version, you can send it to me so I could test it.

My OS X version isn't Qt.1. It doesn't have an installer. It's just the application alone (the ressources are the same as for 1.6.1). I really HATE installers ! 2. It's localized, yes of course (I believe russian language is in there).3. The list of differences from Celestia 1.6.1 OS X is pretty large. Mostly 64bit version (which makes a HUGE difference if you have more than 4GB of memory),new orbit rendering, and many bug fixes (especially that pesky sprites model bug, the annoying OS X window crashing, the crashing bug in low memory conditions, and many smaller bugs).Some annoying URL related bugs (favorite menu) also have been fixed.I don't remember the whole list of bugs fixed. Dirkpitt (Da Woon) and myself worked very hard on this version to fix all the bugs. There are only two or three very minor bugs remaining.

This version is extremely stable on my two computers (Mac mini 2009 and MacBookPro 2010, with OS X 10.6.8 Snow Leopard) : it never crashed, not even once ! I did made everything to crash it, loading ALL my models and textures, etc*. On the other hand, Celestia 1.6.1 is very easy to crash.

This is well worth an upgrade from 1.6.1, which is now totally obsolete to me. It's not even funny !

* Note however that there's a bug in Mountain Lion's graphics drivers : all versions of Celestia are crashing on Intel's GPU (newest Mac mini and MacBookPro) when some dds textures are used. I don't know about OS X 10.9 Mavericks since I never tested it. Intel's GPU suck, for Celestia !

_________________"Well! I've often seen a cat without a grin", thought Alice; "but a grin without a cat! It's the most curious thing I ever saw in all my life!"

Last edited by Cham on Tue, 28-01-14, 16:56 GMT, edited 1 time in total.

Moving in Celestia's universe has never been so fun ! I populated 6 spiral galaxies with several dozens of nebulae and hundreds thousands of stars. Many exo-planets too, for a very nice view from inside M31, M33, NGC 300, NGC 404 and M81 (not counting the Milky Way). M81 has even a few dozens of pulsars with nice supernova remanants.

_________________"Well! I've often seen a cat without a grin", thought Alice; "but a grin without a cat! It's the most curious thing I ever saw in all my life!"

I don't know if my models should render correctly on your version, since I can't tell if the nebulae fix was enabled for your built. I suspect it wasn't enabled.

I have version 1.7.0 Qt4 for Windows from source code, located in the trunk directory.

Cham wrote:

My OS X version isn't Qt.1. It doesn't have an installer. It's just the application alone (the ressources are the same as for 1.6.1). I really HATE installers ! 2. It's localized, yes of course (I believe russian language is in there).3. The list of differences from Celestia 1.6.1 OS X is pretty large....This version is extremely stable on my two computers (Mac mini 2009 and MacBookPro 2010, with OS X 10.6.8 Snow Leopard) : it never crashed, not even once ! I did made everything to crash it, loading ALL my models and textures, etc*. On the other hand, Celestia 1.6.1 is very easy to crash.

It is very good!Could you please send me the application in the PM?Would also ask that you send at least one irregular nebulae model, so I could test it for Celestia 1.7.0 Qt4

I am afraid this will be too big for a PM. Please note also that CelestialMatters is NOT a site devoted to extensive discussions about specific aspects of Celestia... All work that has a more general scope (like e.g. Cham's or John's,...) is of course most welcome!

Celestia impresses me. I placed more than 40 large irregular nebulae in the whole local group of galaxies (plus M81), as much supernova models (all DSC objects), and several hundreds thousands of stars in 5 large galaxies, and yet the frame rate is still VERY good on my old Mac mini 2009 with its 4GB of ram. Of course, performances are even much better on my MacBookPro 2010 (8GB ram).

Traveling in this universe filled with stars and nebulae is really amazing, especially with a CELX script to move from one object to another.

_________________"Well! I've often seen a cat without a grin", thought Alice; "but a grin without a cat! It's the most curious thing I ever saw in all my life!"

I think this is interesting, ... for fictious irregular nebulae models and their stellar distributions :

Here's the LUA Hertzsprung-Russell diagram for the stellar distribution associated to four irregular nebulae.

Some nebula in M31 :

Attachment:

M31A.jpg [ 131.47 KiB | Viewed 2047 times ]

Another nebula in M31 :

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M31C.jpg [ 150.95 KiB | Viewed 2047 times ]

Some nebula in NGC 300 :

Attachment:

NGC300C.jpg [ 163.03 KiB | Viewed 2047 times ]

These diagrams are consistent with hot young blue stars and a few big stars that are already in the red giant phase, typical of real star nursery.The big square near the middle is our Sun, for reference.

A nebula located on the "unknown other side" of the Milky Way :

Attachment:

MWNebA.jpg [ 155.87 KiB | Viewed 2047 times ]

This is typical of a cluster of old stars. Not a star nursery anymore.

These diagrams are surprising to me, since I didn't designed the stellar distributions with any specific age for the stellar distribution.I was expecting some random distributions of stars on the HR plot.

Any comments on this ?

_________________"Well! I've often seen a cat without a grin", thought Alice; "but a grin without a cat! It's the most curious thing I ever saw in all my life!"

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